Looking for a quality USB to ipod dock cable , to use with Sony PHA-2. Seen a photo on the forum, but where to source please?

I know you guys will have done all the tube rolling experiments already, so which type of 6SL7GT tubes have you found to be best in the EAR HP4 amp?  My originals are getting on now, and I heard some definite top end distotion on Joanna Newson last night, so I think some new tubes may be needed...

I am sure this will have been discussed before, but a quick search did not come up with a definitive answer. At the current state of play, what offers the best sound quality and isolation against aircraft noise, IEMs or sound-cancelling 'phones. Being a portable headphone addict, I have a...

I'm having trouble finding a UK source for connectors to allow portable line-out from the iPod docking-slot. I had a Sendstation "Pocket Dock" but lost it and they no longer seem to be available. Bought a few cheap dock-slot plugs from e-bay and made my own cables, but either my soldering is...

Been using and loving my ER4-Ps for many years with both Total Airhead or Meier Porta Corda. Not been able to try the E500s in the UK and would have to buy unseen. But I spend hours listening to portables and the lure of upgrade is strong, will I regret going from the Etys to the Shure? Any pros...

Can anyone advise how to disassemble RS-1s, to allow a cable replacement? The drivers are obviously glued in place. Should the glue be softened with a heat gun, or just prized away? thanks

What is the diference between a "preamplifier" and a dedicated "headphone amplifier". I imagine that the circuit designs are optimised to see different impedances at the output, headphones generally being lower impedance than power amplifier inputs. Some of my hi-fi pre-amps seem to work...

Given a high-end portable amp (and DAC if required). Which portable source offers the best sound? I currently use a 60Gig I-pod (running Apple lossless) for convenience, into a Total Airhead via a Pocketdoc, and ER4-Ps. I have an old (good) Sony CD Walkman, but that also has only line-out...

With the unavailability of Sennheiser Orpheus (in the UK at least), Stax Omega2/007t seems to be the only high-end electrostatic in the market. It is easy to spend more than the cost of that combo on a pair of dynamic phones and a top amp. So what is the way to go? I have HD650 and HD600 and...